Psalm 151
I learned recently there is a Psalm 151. Apparently it is in the Eastern Orthodox Bible, but not in the Catholic/Protestant Bibles.
Is there any historical context why this did not make it into those Bibles?
Are there other Psalms that did not make it into the Bibles? I'd love to read those if they exist.
EDIT: Thank you everyone for the great knowledge and insight. It is great to share what we learn.